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A metal rod of length l cuts across a un...

A metal rod of length l cuts across a unifrom magnetic field B with a velocity v. If the resistance of the circuit of which the rod forms a part is r, then the force required to move the rod is

A

a. `(B^2l^2)/(r)`

B

b. `(Blv)/(r)`

C

c. `(B^2lv)/(r)`

D

d. `(Blv^2)/(r)`

Text Solution

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`(Blv)/(r)`
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NEW JOYTHI PUBLICATION-MOVING CHARGES AND MAGNETISM-COMPETITIVE EXAM CORNER
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